Invest In Apartment Buildings In Idaho

Why Idaho's Renter Base Keeps Growing

Idaho's population grew 12.6% over five years, and the number of employed residents grew 16.0% (U.S. Census ACS 2020–2024). Few states come close to that pace. The state has 198,644 renter households, 27.9% of all households, up 4.9% in that span. Median household income rose 39.5% to $77,800, and unemployment in the survey was 3.7%. Many newcomers buy homes, but a large share rent first, and job growth keeps adding to that pool.

The biggest single driver right now is Micron Technology in Boise, the country's only DRAM maker. Micron is spending about $50 billion on two memory fabs there, backed by up to $6.2 billion in federal CHIPS Act funding. The company said in 2026 that the first fab is on track for wafer output in mid-2027 and the second in late 2028, and it plans about 3,500 direct jobs on top of roughly 7,000 people already working in Boise. On its fiscal third-quarter 2026 earnings call, CEO Sanjay Mehrotra said a shortage of workers with critical trade skills was limiting how fast construction could go, and he also named permitting and the need for more energy infrastructure as constraints. Outside the Treasure Valley, Idaho National Laboratory, the largest Department of Energy site by area, anchors eastern Idaho. INL had more than 6,200 employees in fiscal 2025, making it the state's fifth-largest employer, and the lab estimates each of its jobs supports about 1.8 more elsewhere in Idaho, nearly 11,520 in all. Potato and dairy farming and food processing, including Glanbia's cheese plant in Gooding, support the Snake River Plain.

For owners, Idaho's demand is concentrated. The Treasure Valley holds most of the state's large apartment communities, and its fortunes track Micron and in-migration more than any other factor.

New Supply And Rents In Idaho

Idaho has relatively few apartments. Only 70,531 homes, 8.9% of the state's housing, are in buildings with five or more units, though that count grew 12.7% in five years. The median home was built in 1991. Census rental vacancy is just 3.9%. Median gross rent is $1,238, up 45.1% from $853 in the 2015–2019 survey, and 46.9% of renters spend 30% or more of income on housing. HUD's FY2027 two-bedroom Fair Market Rents range from $1,014 to $1,673 across 44 HUD areas.

The Boise area went through a heavy building cycle and is coming out of it. Lee & Associates reported Treasure Valley apartment vacancy at 7.7% in 4Q 2025, down from a 2024 peak of 10.6%, with asking rents up about 0.8% for the year and 1,861 units under construction. Absorption of 2,528 units over 2025 outpaced 1,155 net deliveries. CoStar described Boise rent growth as rebounding entering 2026 as the market worked through years of heavy construction. The Census vacancy rate is lower because it counts every rental, including houses and duplexes, while broker figures track large managed communities and include buildings still leasing up.

Smaller markets are turning more slowly. CoStar reported in June 2026 that Coeur d'Alene was still rebalancing in the second quarter, with asking rent growth back in positive territory after bottoming out in 2023. In eastern Idaho, the apartment stock is thin enough that a single new complex can move the local balance, so buyers there should look at each project nearby rather than state averages.

Idaho's rules lean toward owners. In 2024 the legislature passed HB 545 to stop cities and counties from enforcing local rent rules, a bill aimed at Boise's Section 8 and application-fee ordinances. Idaho has a flat 5.3% personal income tax in 2026 and a 6% state sales tax. Rental property doesn't qualify for Idaho's homeowner's exemption, so budget property taxes on full assessed value. State landlord-tenant law is also light: there's no cap on security deposits or late fees, a landlord can serve a 3-day notice to pay rent or leave, deposits must be returned within 21 days of move-out (or up to 30 if the lease says so), and month-to-month rent increases need 30 days' written notice. Anyone weighing apartment syndications in Idaho should focus on Treasure Valley absorption and the Micron hiring timeline.

Idaho Regions We Follow

Idaho's apartment markets are small outside the Treasure Valley, and each region has its own anchor.

Idaho By The Numbers

Out of 47 states where we invest in our data, Idaho comes in 21st for median gross rent, 40th for renter share and 2nd for five-year rent growth. Its rents fall in the middle of the pack. Compared with the 2015–2019 survey, Idaho now has about 216,512 more residents, 9,279 more renter households and 7,948 more homes in buildings with 5 or more units. Growth in renter households and new apartment homes has been roughly in balance.

Largest Idaho Apartment Markets

Boise is the largest of the 14 Idaho cities we follow. Here are the ten biggest by population, with median gross rent and renter share from the Census Bureau's ACS 2020–2024 estimates.

Can Tenants Afford Idaho Rents?

The median rent in Idaho works out to $14,856 a year, about 19.1% of the median household income of $77,800. Under the common 30% guideline, a household needs about $49,500 a year to cover that rent comfortably. Renters usually earn less than the all-household median, so the real burden for tenants is higher than this simple ratio shows.

Since the 2015–2019 survey, the median rent rose $385 a month ($4,620 a year), while median household income rose $22,029 a year. Rent has outpaced income, so we are careful about how much further a business plan pushes rents on renewal.

Idaho Rental Market In Numbers

If you only read one part of this page, read this list. Every figure is from the Census Bureau's ACS 5-year estimates.

• Idaho has 1,934,262 residents, up 12.6% from the 2015–2019 survey (U.S. Census ACS 2020–2024).
• Median household income in Idaho is $77,800, up 39.5% over five years (U.S. Census ACS 2020–2024).
• Median gross rent in Idaho is $1,238 a month, up 45.1% over five years (U.S. Census ACS 2020–2024).
• 27.9% of households in Idaho rent, about 198,644 renter households (U.S. Census ACS 2020–2024).
• 8.9% of homes in Idaho are in buildings with 5 or more units (U.S. Census ACS 2020–2024).
• The rental vacancy rate in Idaho is 3.9%, and 46.9% of renters spend 30% or more of income on rent (U.S. Census ACS 2020–2024).
• The median home in Idaho was built in 1991 (U.S. Census ACS 2020–2024).

What We Look For In Idaho

In Idaho we focus on apartment buildings with 5 or more units. Some are stabilized and well run. Others have below-market rents or deferred maintenance that a better operator can fix. Either way, the deal has to make sense on current numbers.

Property taxes are a big line item for any Idaho apartment building. We estimate the tax bill as it will be after the purchase, because a sale can trigger a reassessment in many places. Idaho has no statewide rent control law, though local rules on notices, fees and deposits still apply. Insurance quotes in Idaho reflect wildfire risk, so we get a quote before we make an offer.

Given how fast rents rose here, we assume much slower rent growth going forward and make sure the deal still works if rents stay flat for a while.

Due Diligence For Apartment Syndications In Idaho

Whoever the sponsor is, these are the questions we would want answered about any apartment syndication in Idaho, based on the local numbers above.

• What vacancy does the plan assume? Rental vacancy in Idaho is 3.9%. A plan that assumes much lower vacancy than the market should explain why.
• What rent growth is underwritten? Rents here rose 45.1% over five years. Ask whether the plan assumes that pace continues, and what happens to the deal if rents stay flat.
• How was the property tax bill estimated? A sale often triggers a reassessment, so the bill after purchase can be well above what the seller pays today.
• How big is the repair reserve? The median home in Idaho was built in 1991, and even newer buildings need money set aside for roofs, HVAC and appliances.
• How will the building compete with new supply? Homes in 5+ unit buildings in Idaho rose 12.7% over five years, so newer properties are part of the competition.
• How and when does capital come back? Ask what the plan is for a refinance or sale, and what happens if that takes longer than expected.

How Passive Investing In An Idaho Apartment Syndication Works

A syndication splits the work from the capital. As general partner, Skyline sources and buys the building, sets the business plan and runs it with a property manager. Limited partners invest money, own part of the property and receive reports, but they don't manage anything day to day.

Expect your money to be tied up for years, with no easy way to sell your share early, and remember that any investment can lose money. Most deals are open only to accredited investors under Rule 506(b) or 506(c). See investing with Skyline Capital for how we work with limited partners.

Getting Started

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